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Footings for a structure are to be built beneath a basement slab on a clay at a depth of 20 ft. below present ground level. Representative consolidation tests on the soil produce a 0.043 slope of recompression curve. The groundwater table is 15 ft. below the ground surface. The soil has a unt weight of 120 pcf. The soil-void ratio is about 0.87. If the average bearing pressure on the footings is 2,600 psf., estimate the settlement of 10 ft. and 5 ft. square footings. Also , what is the factor of safety for the footings against bearing failure if the clay soil has an unconfined compressive strenght of 3,600 psf? The back of the book says that for a 5 ft. footing, the estimated settlement= 1.72 in. And for a 10ft. footing, the estimated settlement= 2.42 in. Also it says the Factor of Safety at least for the 5 t. footing is FS=5.554.
three kg of air contained in a sealed deformable device at 150 deg c and 500 kpa is expanded to 150 kpa in an
The brake of a vehicle can be modeled as a solid of mass m , with specific heat c and uniform temperature T , initially equal to the ambient temperature T0. During the braking process the brake receives work input W, temperature rises to T and heat t..
A very large vertical steel plate that is 1 cm thick is inductively heated with internal heat generation rate of 2x10^9 W/m3 . The plate is initially at 20°C, and the left and right surfaces are kept at 20°C throughout the heating process.
The power output of a non-ideal gas turbine cycle having a compressor thermal efficiency of 80% and a turbine thermal efficiency of 90 %., open-cycle gas turbine cycle is 75 MW and its pressure ratio is 16. Air enters the compressor at 520 R and ente..
in an ideal dual combustion cycle conditions at the commencement of adiabatic compression are 93 kpa 0.05 m3 and 24degc
the data listed below are claimed for a power cycle operating between hot and cold reservoirs at 1000 k and 300 k
1.25 kg of a gas within a piston-cylinder assembly undergoes an expansion from a volume of v10.1m3 to a volume of
determine the ratio of butadiene to syrene mers in a copolymer having a weight average molecular weight of 350000 gmol
determine the critical crack length for an internal crack in a thick 2024-t6 alloy plate that has a racture toughness
the springs of an automobile trailer are compressed 10.6 cm under its weight. find the critical speed when the trailer
consider a piston-cylinder assembly containing 0.14 kg of air initially at a pressure of 350 kpa. heat is added during
the corundum crystal structure found in the compound al2o3 consists of an hcp arrangement of o-2 ions the al 3 ions
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